Vocab
Circuits
Charging
Calculations
Magnetism
Other
100
What is electricity?
The flow of electrons
100
What is the difference between an alternating and Direct Current
A the charge of a direct current flows in one direction while the charge in an alternating reverses directions
100
What is a charge?
A physical property resulting from the collection of or dispersion of electrons.
100
What is the formula for calculating resistance
V/I
100
The two opposite ends of a magnet are called
Poles
100
What is the difference between a Conductor and Insulator?
Conductors allow for the flow of electricity, while Insulators do not allow for charges to flow.
200
What is Static Electricity?
A buildup of charges on an object. Generally produced by friction or induction.
200
Where will you find alternating current (list examples that provide or use AC)
In anything used in your home or on the main power grid from the electric company – your TV, vacuum cleaner, microwave.
200
Describe how a charge builds up via friction.
As two objects rub together, electrons from one object are transferred from one object to the other
200
Use Ohm’s law to calculate the voltage needed to make a current of 5A in a resistance of 15Ω. Show the formula and your work.
75v
200
The push or pull that magnets exert on each other is known as
Magnetic Force
200
Give an example of a conductor and an insulator
Conductor: Metal
Insulator: Rubber
300
Define Force
A push or pull on an object
300
Give an example of a series circuit
Christmas lights
300
Conduction - describe what happens to the charge.
A negatively charged object (like a plastic ruler) transfer some of its electrons to a neutral object when they touch.
300
What is the voltage?
1000V
300
What must occur to the domains of an atom in order for it to be magnetic?
They must all be aligned (going in the same direction)
300
How many cells does this circuit have?
2
400
What is an electroscope?
a device for detecting the presence of electric charge
400
List two advantages of a series circuit
Battery Lifespan
Uses Less wire
400
State the law of electric charges
Opposite charges attract, Like charges repel
400
What current (in amperes) will a 12v battery have if the resistance is 3 Ω? Show the formula and your work.
4A
400
How does and electromagnet work? Define it.
A coil wrapped around an iron core that acts as a magnet when an electric current flows through the wire coil.
400
What are conductive solutions?
Solutions that contain IONS that allow for the transfer of electrons (electricity)
500
Define Spark (Or what causes a spark)
an electric discharge caused by electrons jumping from one conductor to another through the air
500
Are the bulbs brighter in a parallel or series circuit?
Parallel
500
Induction - describe what happens to the charg
A negative charged object –when placed near a neutral object – causes the electrons on another object to be repelled, leaving a positively charge surface because only the electron can move-the protons are locked in place by the nucleus.
500
What is the Current?
2A
500
What happens to a bar magnet if it cut in half?
It forms two smaller magnets, each with a north and south pole.
500
Describe the difference between Electric Motors and Electric Generators
Electric Motors transfer electrical energy to mechanical. ex, blender. Electric generators transfer Mechanical energy to Electrical. Ex, Wind Turbine
600
Mike's mom has three kids, Penny sue and ____________
Mike